Shaft sealing ring

Details Shaft sealing ring Shaft sealing ring

1988-12-16

1990-10-23

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16J 1532

Patent

active

049646478

ABSTRACT:
An article for use as a shaft sealing ring for sealing a fluid medium includes an elastomeric body, a housing member, and a sealing lip having a sealing edge; the sealing edge, when installed about a shaft, being radially deformed and contacting a surface of the shaft along a running zone having a first end adjoining the fluid medium and a second end adjoining the environment to be sealed from the fluid medium; the sealing edge, when in a non-installed condition, having an annular surface of varying inner diameter along the running zone; the smallest of the varying inner diameter lying closer to the first end than to the second end.

REFERENCES:
patent: 3921990 (1975-11-01), Johnston et al.
patent: 3921992 (1975-11-01), Bertin
Mathias Kammuller und Heinz Konrad Muller, "Physikalische Ursachen der Dichtwirkung von Radial-Wellendichtringen", [Physical Aspects of the Sealing Mechanism of Elastomer Rotary Shaft Seals], ATZ Automobhiltechnische Zeitschrift 88, 1986, pp. 39-45.

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